The principle base class for implementation of the Visitor pattern for rendering markup. This base class contains context information and utility methods to support rendering methods that output markup to the HtmlTextWriter. This class is used by control developers only as a base class for specific rendering implementations.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
